Hi,

I think there is better idea, and a lot more freedom for you:

1. Airplane Wings Load is usually the "thing" all refer to. Some fly at 20g/sq.dm, some go to
120g/sq.dm. depending on many things, for example if you want to "battle" cross wind then
it is better you go to 100 or more g/sq.dm. If you want to fly slow 3D you better try to stick
around 30-40g/sq.dm. The surface of the other parts is usually not taken into account in first
glance.

2. Engine power is the next to consider. Take a look at the Propeller Calcualtor of Pe Reivers
which is an Excel file at (it will start downloading as soon as you click next link):

http://www.mvvs.nl/prop-power-calculator.xls

and there you will find the Thurst of your engine and the Speed of you plane and many
other uselful parameters too.

It is a very realistic way to go if you want to be on the path of do-it-yourself.

Of course there are some book at www.Towerhobbies.com you might be willing
to read about this.

Cheers,
Nick